Advertisements
Advertisements
प्रश्न
Write a note on coagulation of blood.
Advertisements
उत्तर
- Clotting or coagulation is the process of converting the liquid blood into a solid form. This process may be initiated by contact of blood with any foreign surface (intrinsic process) or with damaged tissue (extrinsic process).
- Intrinsic and extrinsic processes involve interaction of various substances called clotting factors by a step wise or cascade mechanism.
- There are in all twelve clotting factors numbered as I to XIII (factor VI is not in active use). Interaction of these factors occurs in cascade manner leading to formation of the enzyme thrombin.
- Thromboplastin helps in the formation of enzyme prothrombinase. This enzyme inactivates heparin and it also converts inactive prothrombin into its active thrombin.
- Thrombin converts soluble blood protein fibrinogen into insoluble fibrin. Fibrin forms a mesh in which platelets and other blood cells are trapped to form the clot.
APPEARS IN
संबंधित प्रश्न
Give technical terms for The fluid portion of blood
Choose the correct answer:
Exchange of material between blood and interstitial fluid occurs only at the ________
Given below is a diagram of a smear of human blood. Study the same and answer the question that follow:
Mention two structural differences between the parts labeled 1 and 2.
Write about origin and functions of Red Blood Corpuscles
Explain the Term
Diapedesis
Give Technical Term for the following:
The respiratory pigment contained in human blood.
Complete the following sentence with appropriate words:
The _______ is referred to as the graveyard of red blood corpuscles and the _______ referred to as the cradle of red blood corpuscles.
State the Function: Thrombocytes
______ is a defensive protein useful in blood clotting.
Distinguish between the following pair on the basis of words indicated in the bracket ( ):
Leukocytes and Thrombocytes (Life-span)
